436rwhp cam only
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
I've gone from bone stock to full boltons + cam in stages and tracked my rwhp, et and mpg in each stage. Thought this information might be useful or interesting to someone:
Bone stock:
3,967 miles, 38 passes, 12.970@109.98, 19.95 avg MPG
Vararam & ported intake:
separate mileage data not kept but best ET 12.570@112.00
Add headers, 3.90 gears and tune:
10,116 miles, 85 passes, 11.810@118.76, 18.94 avg MPG
Add G5x3 cam and thinner head gaskets to raise compression to 11.4:
5,855 miles, 54 passes, 11.619@121.19, 16.76 avg MPG
MPG effect:
1.00 decrease for gears/headers
2.19 decrease for cam compared to bolt ons only
3.19 decrease for cam and all mods from stock
I bought a mail order tune from Charlie at RPM Motors and self tweaked it and my car is a great daily driver even with the large g5x3 cam. With 436/392 rwhp/rwtq I am at the limit of the stock clutch. I had to remove the pedal spring to keep it from sticking down despite religious fluid changes.
Racer
Joined: Jul 2007
Posts: 276
Likes: 0
From: Lynchburg VA
St. Jude Donor '11
